This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A225893 #5 May 21 2013 12:40:24 %S A225893 2450,2827442,3420650,131091050,607597850,1387525250,3262865762, %T A225893 3969189002,4362536450,7370136650,8882968250,38513866250,43618113650, %U A225893 96254752250,110842051970,123657370850,135755034050,170940489050,304758650450,328385729450,472300879322 %N A225893 Numbers of the form p^2 * (p^2 + 1), where p = A224718. %C A225893 The sequence A224718 of Zak Seidov, about prime numbers p such that p^2+1 is not squarefree. %t A225893 p = Select[Prime[Range[250]], !SquareFreeQ[#^2+1]&]; p^2 * (p^2+1) %Y A225893 Cf. A224718. %K A225893 nonn %O A225893 1,1 %A A225893 _Rafael Parra Machio_, May 20 2013